Edit: After I bitch about the single pic, it loads all of them. Great.
Revised opinion: Nice, if a little bit bland. I guess that's down to the painting not being finished yet. But very "military", i.e. nicely done. Looking forward to the finished items.
The walker looks like one of the resin pieces from the Kryomek range. Some nice designs in there. Scotia Grendel sell them nowadays, if I'm not mistaken...